"We tend to think about issues such as virtual reality and robotic sex within the context of current norms.

"But if we think back to the social norms about sex that existed just 100 years ago, it is obvious that they have changed rapidly and radically.

Robophilia may be alien now, but could be normal in the near future as attitudes evolve with technology.

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"As virtual reality becomes more realistic and immersive and is able to mimic and even improve on the experience of sex with a human partner; it is conceivable that some will choose this in preference to sex with a less than perfect human being."

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Although it might not appeal at first, he said, "once you have a story like 'I had sex with a robot, and it was great!' appear someplace like Cosmo magazine, I'd expect many people to jump on the bandwagon."

In his PhD thesis, Intimate Relationships with Artificial Partners, Levy stated that the more human-like robots become in terms of personality, function and appearance, the more likely they are to form romantic partners for real people.

"It may sound a little weird, but it isn't.

Old news: True Companion sex robot, Roxxxy was the next big thing five years ago, but tech has advanced (Photo: Getty)

Dr Ian Pearson even wrote in a report produced for online sex shop Bondara: “Brothels and strip clubs will soon include robots and they will be a specific fetish for some people, as well as a potentially cheaper replacement for real-life interaction.”

According to Dr. Pearson, advances in sex tech will provide opportunities for those that otherwise wouldn't have them.

His report marks 2050 as the year that human/robot sex overtakes human/human.

And the technology is ready to go this year.

Meet Gabrielle, a real looking prosthetic male doll:

Matt McMullen, the CEO of "love doll" manufacturer RealDoll, is busy making a new toy (the first one is called Harmony) that will blink, open its mouth and even have a chat with you.

The ultimate aim is to create a doll that appears to behave as if 'she' enjoys the act of sex.

"We might very well be launching a new company devoted solely to the development of integrating AI with realistic sex toys, as well as potential VR applications," McMullen said in a Reddit ask-me-anything.